exactly just dnt show your reg.
it use to be funny when we had to check max power or fast car and there wer sum numptie chav with his saxslow vts standing next to it with his reg showing, nxt thing he knows hes got a letter through the door asking for £4000 cos he ant declared any mods and cos he bin insured with us for the last three years so they backdate it! HA, THATS WOT YOU GET FOR DRIVING A SAXO.